Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

Photorespiration does not produce energy or reducing power. Rather it consumes energy. In ${\mathrm{C}}_4$ plants, photorespiration, does not occur. Here, RuBisCO is located only in bundle sheath cells where photosynthetic release of oxygen does not occur. Bundle sheath cells have a high intracellular concentration of ${\mathrm{CO}}_2$ due to flow of ${\mathrm{C}}_4$ acids and their decarboxylation to release ${\mathrm{CO}}_2$. Therefore, $\mathrm{RuBisCO}$ functions purely as carboxylase in ${\mathrm{C}}_4$ plants. They show high productivity and hence higher yield.